TM 9-4120-388-14
4-45. JUNCTION BOX.
This junction box is the protective enclosure that contains the compressor circuit breaker (CB1), relays (K1, K2 and K4),
time delay relay (K3), fuses (F1, F2 and F3), rectifier (CR1), and terminal blocks (TB1 and TB2). The transformer (T1) is
mounted on the outside top of the box. See the following paragraphs for maintenance of junction box parts.
Junction box removal/installation. (See para 4-46.)
a.
Junction box access to internal components. (See para 4-47.)
b.
Circuit breaker external reset control. (See para 4-48.)
c.
d.
Junction box harnesses. (See para 4-49.)
Transformer (T1). (See para 4-50.)
e.
f.
Compressor circuit breaker (CB1). (See para 4-51.)
Fuses (F1, F2, and F3). (See para 4-52.)
g.
h.
Rectifier (CR1). (See para 4-53.)
Time delay relay (K3). (See para 4-54.)
i.
Compressor start relay (K1). (See para 4-55.)
j-
k.
Heater relay (K2). (See para 4-56.)
l.
Fan motor relay (K4). (See para 4-57.)
m.
Terminal boards (TB1 and TB2). (See para 4-58.)
n.
Junction box housing, panel, and cover. (See para 4-59.)
